+# default unless configured otherwise:
+ISO_LOCATION="/boot/grml"
+
+if [ -r /etc/default/grml-rescueboot ] ; then
+ . /etc/default/grml-rescueboot
+fi
+
+resolve_dm_name() {
+ retval="$1"
+ base=${1##*/}
+ for block in /sys/block /sys/class/block ; do
+ [ ! -d ${block}/${base}/dm ] && continue
+ retval="/dev/mapper/$(cat ${block}/${base}/dm/name)"
+ break
+ done
+ case "$retval" in
+ /dev/dm-*)
+ minor=${retval##*-}
+ retval="/dev/mapper/$(dmsetup info -C --noheadings -o name -j 253 -m $minor)"
+ ;;
+ esac
+
+ echo "$retval"
+}
+
+get_dependencies() {
+ device=${1}
+ if [ -z ${device} ] ; then
+ return
+ fi
+ device=$(readlink -f ${device})
+ case "$device" in
+ /dev/mapper/*)
+ device="/dev/dm-$(dmsetup info -C --noheadings -o minor "$device")"
+ ;;
+ esac
+
+ base=${device##*/}
+ dependencies=""
+ additional_dependencies=""
+ for block in /sys/block /sys/class/block ; do
+ [ ! -d ${block}/${base}/slaves ] && continue
+ for file in ${block}/${base}/slaves/* ; do
+ dep_name="/dev/${file##*/}"
+ dep_name=$(resolve_dm_name ${dep_name})
+
+ # resolve recursively all dependencies
+ additional_dependencies=$(get_dependencies ${dep_name})
+
+ dependencies="$dependencies $additional_dependencies $dep_name"
+ done
+ break
+ done
+ echo $dependencies